K&N parts matching BMW 137178507320 air filter

The BMW 137178507320 air filter cross references with the K&N air filter parts below. K&N offers compatible air filters for many BMW air filters giving you an alternative.
ProductPart NumberProduct Image 
K&N Replacement Air Filter
  • Designed to Increase Power
  • Million Mile Limited Warranty
William Ruiz, Miami, Florida
Excellent product. Very happy with it.
Michael Weir, Oceano, California
The filter does make a difference in my gas mileage and in performance. It is a small difference but it all adds up in the long run. Better than the stock filter, you can see that just by looking at it.
Brian Price, Dallas, Texas
The K&N drop in filter was a great addition to my Twin Turbo 2012 BMW 328i. Immediately I noticed the difference in smoother acceleration and gear changes. The extra power is nice too when you put the car in Sport Mode and let it have it.
33-2990 K&N 33-2990 Replacement Air Filter
List Price: $78.29
Your Price: $49.99